542 lines
22 KiB
Python
542 lines
22 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import base64
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import datetime
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import hashlib
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import os
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import uuid
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from oslo_utils import timeutils
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from keystone.common import config
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from keystone.common import utils
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from keystone import exception
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from keystone.tests import unit
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from keystone.tests.unit import ksfixtures
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from keystone.token import provider
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from keystone.token.providers import fernet
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from keystone.token.providers.fernet import token_formatters
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from keystone.token.providers.fernet import utils as fernet_utils
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CONF = config.CONF
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class TestFernetTokenProvider(unit.TestCase):
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def setUp(self):
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super(TestFernetTokenProvider, self).setUp()
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self.useFixture(ksfixtures.KeyRepository(self.config_fixture))
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self.provider = fernet.Provider()
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def test_supports_bind_authentication_returns_false(self):
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self.assertFalse(self.provider._supports_bind_authentication)
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def test_needs_persistence_returns_false(self):
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self.assertFalse(self.provider.needs_persistence())
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def test_invalid_v3_token_raises_404(self):
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self.assertRaises(
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exception.TokenNotFound,
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self.provider.validate_v3_token,
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uuid.uuid4().hex)
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def test_invalid_v2_token_raises_404(self):
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self.assertRaises(
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exception.TokenNotFound,
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self.provider.validate_v2_token,
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uuid.uuid4().hex)
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class TestTokenFormatter(unit.TestCase):
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def test_restore_padding(self):
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# 'a' will result in '==' padding, 'aa' will result in '=' padding, and
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# 'aaa' will result in no padding.
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strings_to_test = ['a', 'aa', 'aaa']
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for string in strings_to_test:
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encoded_string = base64.urlsafe_b64encode(string)
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encoded_str_without_padding = encoded_string.rstrip('=')
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self.assertFalse(encoded_str_without_padding.endswith('='))
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encoded_str_with_padding_restored = (
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token_formatters.TokenFormatter.restore_padding(
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encoded_str_without_padding)
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)
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self.assertEqual(encoded_string, encoded_str_with_padding_restored)
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class TestPayloads(unit.TestCase):
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def test_uuid_hex_to_byte_conversions(self):
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payload_cls = token_formatters.BasePayload
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expected_hex_uuid = uuid.uuid4().hex
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uuid_obj = uuid.UUID(expected_hex_uuid)
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expected_uuid_in_bytes = uuid_obj.bytes
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actual_uuid_in_bytes = payload_cls.convert_uuid_hex_to_bytes(
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expected_hex_uuid)
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self.assertEqual(expected_uuid_in_bytes, actual_uuid_in_bytes)
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actual_hex_uuid = payload_cls.convert_uuid_bytes_to_hex(
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expected_uuid_in_bytes)
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self.assertEqual(expected_hex_uuid, actual_hex_uuid)
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def test_time_string_to_int_conversions(self):
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payload_cls = token_formatters.BasePayload
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expected_time_str = utils.isotime(subsecond=True)
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time_obj = timeutils.parse_isotime(expected_time_str)
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expected_time_int = (
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(timeutils.normalize_time(time_obj) -
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datetime.datetime.utcfromtimestamp(0)).total_seconds())
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actual_time_int = payload_cls._convert_time_string_to_int(
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expected_time_str)
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self.assertEqual(expected_time_int, actual_time_int)
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actual_time_str = payload_cls._convert_int_to_time_string(
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actual_time_int)
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self.assertEqual(expected_time_str, actual_time_str)
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def test_unscoped_payload(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.UnscopedPayload.assemble(
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exp_user_id, exp_methods, exp_expires_at, exp_audit_ids)
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(user_id, methods, expires_at, audit_ids) = (
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token_formatters.UnscopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_project_scoped_payload(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_project_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.ProjectScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids)
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(user_id, methods, project_id, expires_at, audit_ids) = (
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token_formatters.ProjectScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_domain_scoped_payload(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_domain_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.DomainScopedPayload.assemble(
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exp_user_id, exp_methods, exp_domain_id, exp_expires_at,
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exp_audit_ids)
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(user_id, methods, domain_id, expires_at, audit_ids) = (
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token_formatters.DomainScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_domain_id, domain_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_domain_scoped_payload_with_default_domain(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_domain_id = CONF.identity.default_domain_id
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.DomainScopedPayload.assemble(
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exp_user_id, exp_methods, exp_domain_id, exp_expires_at,
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exp_audit_ids)
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(user_id, methods, domain_id, expires_at, audit_ids) = (
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token_formatters.DomainScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_domain_id, domain_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_trust_scoped_payload(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_project_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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exp_trust_id = uuid.uuid4().hex
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payload = token_formatters.TrustScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids, exp_trust_id)
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(user_id, methods, project_id, expires_at, audit_ids, trust_id) = (
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token_formatters.TrustScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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self.assertEqual(exp_trust_id, trust_id)
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def test_unscoped_payload_with_non_uuid_user_id(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['password']
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.UnscopedPayload.assemble(
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exp_user_id, exp_methods, exp_expires_at, exp_audit_ids)
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(user_id, methods, expires_at, audit_ids) = (
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token_formatters.UnscopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_project_scoped_payload_with_non_uuid_user_id(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['password']
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exp_project_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.ProjectScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids)
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(user_id, methods, project_id, expires_at, audit_ids) = (
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token_formatters.ProjectScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_project_scoped_payload_with_non_uuid_project_id(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_project_id = 'someNonUuidProjectId'
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.ProjectScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids)
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(user_id, methods, project_id, expires_at, audit_ids) = (
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token_formatters.ProjectScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_domain_scoped_payload_with_non_uuid_user_id(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['password']
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exp_domain_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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payload = token_formatters.DomainScopedPayload.assemble(
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exp_user_id, exp_methods, exp_domain_id, exp_expires_at,
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exp_audit_ids)
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(user_id, methods, domain_id, expires_at, audit_ids) = (
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token_formatters.DomainScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_domain_id, domain_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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def test_trust_scoped_payload_with_non_uuid_user_id(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['password']
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exp_project_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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exp_trust_id = uuid.uuid4().hex
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payload = token_formatters.TrustScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids, exp_trust_id)
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(user_id, methods, project_id, expires_at, audit_ids, trust_id) = (
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token_formatters.TrustScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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self.assertEqual(exp_trust_id, trust_id)
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def test_trust_scoped_payload_with_non_uuid_project_id(self):
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exp_user_id = uuid.uuid4().hex
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exp_methods = ['password']
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exp_project_id = 'someNonUuidProjectId'
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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exp_trust_id = uuid.uuid4().hex
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payload = token_formatters.TrustScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids, exp_trust_id)
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(user_id, methods, project_id, expires_at, audit_ids, trust_id) = (
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token_formatters.TrustScopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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self.assertEqual(exp_trust_id, trust_id)
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def test_federated_payload_with_non_uuid_ids(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['password']
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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exp_federated_info = {'group_ids': [{'id': 'someNonUuidGroupId'}],
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'idp_id': uuid.uuid4().hex,
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'protocol_id': uuid.uuid4().hex}
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payload = token_formatters.FederatedUnscopedPayload.assemble(
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exp_user_id, exp_methods, exp_expires_at, exp_audit_ids,
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exp_federated_info)
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(user_id, methods, expires_at, audit_ids, federated_info) = (
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token_formatters.FederatedUnscopedPayload.disassemble(payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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self.assertEqual(exp_federated_info['group_ids'][0]['id'],
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federated_info['group_ids'][0]['id'])
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self.assertEqual(exp_federated_info['idp_id'],
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federated_info['idp_id'])
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self.assertEqual(exp_federated_info['protocol_id'],
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federated_info['protocol_id'])
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def test_federated_project_scoped_payload(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['token']
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exp_project_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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exp_federated_info = {'group_ids': [{'id': 'someNonUuidGroupId'}],
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'idp_id': uuid.uuid4().hex,
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'protocol_id': uuid.uuid4().hex}
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payload = token_formatters.FederatedProjectScopedPayload.assemble(
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exp_user_id, exp_methods, exp_project_id, exp_expires_at,
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exp_audit_ids, exp_federated_info)
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(user_id, methods, project_id, expires_at, audit_ids,
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federated_info) = (
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token_formatters.FederatedProjectScopedPayload.disassemble(
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payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_project_id, project_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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self.assertDictEqual(exp_federated_info, federated_info)
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def test_federated_domain_scoped_payload(self):
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exp_user_id = 'someNonUuidUserId'
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exp_methods = ['token']
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exp_domain_id = uuid.uuid4().hex
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exp_expires_at = utils.isotime(timeutils.utcnow(), subsecond=True)
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exp_audit_ids = [provider.random_urlsafe_str()]
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exp_federated_info = {'group_ids': [{'id': 'someNonUuidGroupId'}],
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'idp_id': uuid.uuid4().hex,
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'protocol_id': uuid.uuid4().hex}
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payload = token_formatters.FederatedDomainScopedPayload.assemble(
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exp_user_id, exp_methods, exp_domain_id, exp_expires_at,
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exp_audit_ids, exp_federated_info)
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(user_id, methods, domain_id, expires_at, audit_ids,
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federated_info) = (
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token_formatters.FederatedDomainScopedPayload.disassemble(
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payload))
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self.assertEqual(exp_user_id, user_id)
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self.assertEqual(exp_methods, methods)
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self.assertEqual(exp_domain_id, domain_id)
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self.assertEqual(exp_expires_at, expires_at)
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self.assertEqual(exp_audit_ids, audit_ids)
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self.assertDictEqual(exp_federated_info, federated_info)
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class TestFernetKeyRotation(unit.TestCase):
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def setUp(self):
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super(TestFernetKeyRotation, self).setUp()
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# A collection of all previously-seen signatures of the key
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# repository's contents.
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self.key_repo_signatures = set()
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@property
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def keys(self):
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"""Key files converted to numbers."""
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return sorted(
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int(x) for x in os.listdir(CONF.fernet_tokens.key_repository))
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@property
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def key_repository_size(self):
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"""The number of keys in the key repository."""
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return len(self.keys)
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@property
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def key_repository_signature(self):
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"""Create a "thumbprint" of the current key repository.
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Because key files are renamed, this produces a hash of the contents of
|
|
the key files, ignoring their filenames.
|
|
|
|
The resulting signature can be used, for example, to ensure that you
|
|
have a unique set of keys after you perform a key rotation (taking a
|
|
static set of keys, and simply shuffling them, would fail such a test).
|
|
|
|
"""
|
|
# Load the keys into a list.
|
|
keys = fernet_utils.load_keys()
|
|
|
|
# Sort the list of keys by the keys themselves (they were previously
|
|
# sorted by filename).
|
|
keys.sort()
|
|
|
|
# Create the thumbprint using all keys in the repository.
|
|
signature = hashlib.sha1()
|
|
for key in keys:
|
|
signature.update(key)
|
|
return signature.hexdigest()
|
|
|
|
def assertRepositoryState(self, expected_size):
|
|
"""Validate the state of the key repository."""
|
|
self.assertEqual(expected_size, self.key_repository_size)
|
|
self.assertUniqueRepositoryState()
|
|
|
|
def assertUniqueRepositoryState(self):
|
|
"""Ensures that the current key repo state has not been seen before."""
|
|
# This is assigned to a variable because it takes some work to
|
|
# calculate.
|
|
signature = self.key_repository_signature
|
|
|
|
# Ensure the signature is not in the set of previously seen signatures.
|
|
self.assertNotIn(signature, self.key_repo_signatures)
|
|
|
|
# Add the signature to the set of repository signatures to validate
|
|
# that we don't see it again later.
|
|
self.key_repo_signatures.add(signature)
|
|
|
|
def test_rotation(self):
|
|
# Initializing a key repository results in this many keys. We don't
|
|
# support max_active_keys being set any lower.
|
|
min_active_keys = 2
|
|
|
|
# Simulate every rotation strategy up to "rotating once a week while
|
|
# maintaining a year's worth of keys."
|
|
for max_active_keys in range(min_active_keys, 52 + 1):
|
|
self.config_fixture.config(group='fernet_tokens',
|
|
max_active_keys=max_active_keys)
|
|
|
|
# Ensure that resetting the key repository always results in 2
|
|
# active keys.
|
|
self.useFixture(ksfixtures.KeyRepository(self.config_fixture))
|
|
|
|
# Validate the initial repository state.
|
|
self.assertRepositoryState(expected_size=min_active_keys)
|
|
|
|
# The repository should be initialized with a staged key (0) and a
|
|
# primary key (1). The next key is just auto-incremented.
|
|
exp_keys = [0, 1]
|
|
next_key_number = exp_keys[-1] + 1 # keep track of next key
|
|
self.assertEqual(exp_keys, self.keys)
|
|
|
|
# Rotate the keys just enough times to fully populate the key
|
|
# repository.
|
|
for rotation in range(max_active_keys - min_active_keys):
|
|
fernet_utils.rotate_keys()
|
|
self.assertRepositoryState(expected_size=rotation + 3)
|
|
|
|
exp_keys.append(next_key_number)
|
|
next_key_number += 1
|
|
self.assertEqual(exp_keys, self.keys)
|
|
|
|
# We should have a fully populated key repository now.
|
|
self.assertEqual(max_active_keys, self.key_repository_size)
|
|
|
|
# Rotate an additional number of times to ensure that we maintain
|
|
# the desired number of active keys.
|
|
for rotation in range(10):
|
|
fernet_utils.rotate_keys()
|
|
self.assertRepositoryState(expected_size=max_active_keys)
|
|
|
|
exp_keys.pop(1)
|
|
exp_keys.append(next_key_number)
|
|
next_key_number += 1
|
|
self.assertEqual(exp_keys, self.keys)
|
|
|
|
def test_non_numeric_files(self):
|
|
self.useFixture(ksfixtures.KeyRepository(self.config_fixture))
|
|
evil_file = os.path.join(CONF.fernet_tokens.key_repository, '99.bak')
|
|
with open(evil_file, 'w'):
|
|
pass
|
|
fernet_utils.rotate_keys()
|
|
self.assertTrue(os.path.isfile(evil_file))
|
|
keys = 0
|
|
for x in os.listdir(CONF.fernet_tokens.key_repository):
|
|
if x == '99.bak':
|
|
continue
|
|
keys += 1
|
|
self.assertEqual(3, keys)
|
|
|
|
|
|
class TestLoadKeys(unit.TestCase):
|
|
def test_non_numeric_files(self):
|
|
self.useFixture(ksfixtures.KeyRepository(self.config_fixture))
|
|
evil_file = os.path.join(CONF.fernet_tokens.key_repository, '~1')
|
|
with open(evil_file, 'w'):
|
|
pass
|
|
keys = fernet_utils.load_keys()
|
|
self.assertEqual(2, len(keys))
|
|
self.assertTrue(len(keys[0]))
|